Dear all,
sorry for being so dumb but I've still problems with types and the sig
syntax.
I'm trying to write a Graph ADT:
module type GraphADT =
sig
type 'a graph
val EmptyGraph : 'a graph
val AddNode : 'a * 'a graph -> 'a graph
end;;
but when I try to evaluate it I get:
Syntax error: 'end' expected, the highlighted 'sig' might be unmatched
pointing to the row inbetween type and the first val but I don't
understand why and how to solve it.
Any help is welcome as always
TIA
Walter
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